1984 300TDT with 319K.

Symptoms - Shifts OK between 1st and 2nd with a slight clunk. Slips when going from 2nd to 3rd, much like a mis-shift on a standard transmission, but then goes into 3rd. No problem from 3rd to 4th. Moderate clunk downshifting. Clunks seem to be more noticeable than before the problem appeared. This happened all of a sudden. I had a significant clunk problem a few months back, which was resolved by replacing a 2 inch piece of vacuum line.

Does this appear to be vacuum related? Or do I need to look elsewhere?

I will be checking out the monster thread on this issue, but thought someone might recognize this and speed up the process.

Thanks in advance.

__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net

It could be vac.Old connectors can leak.Try sucking on line to trans,then stick tounge on it,to see if modulator loses pressure.This works to on a modulator at injection pump.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

low vac normally gives harsh shift. Biodiesel recently had this problem & I think he fixed it. K1 & K2 springs were involved. There is a valve spring kit that is designed to fix harsh shifts & flairing.

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=S68165D&Category_Code=722-3vbkits&Product_Count=1

is what you are looking for.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

I notice on the black Vacuum Valve Lever box on top of the valve cover that the vacuum lines run into, there are two "ports" which have no lines connected. Is something missing, or is that normal on an '84 300TD?

__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net

normal. it's best to disable all the hoses going to that box and plug the EGR that it controls.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Where exactly does that spring kit go?

__________________
"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
rover1@sbcglobal.net